I can timetable you can timetable he can timetable we can timetable you can timetable they can timetable
V-ing form
I can be timetabling you can be timetabling he can be timetabling we can be timetabling you can be timetabling they can be timetabling
Perfect
I can have timetabled you can have timetabled he can have timetabled we can have timetabled you can have timetabled they can have timetabled
V-ing perfect
I can have been timetabling you can have been timetabling he can have been timetabling we can have been timetabling you can have been timetabling they can have been timetabling
Negation
Simple form
I cannot timetable you cannot timetable he cannot timetable we cannot timetable you cannot timetable they cannot timetable
V-ing form
I cannot be timetabling you cannot be timetabling he cannot be timetabling we cannot be timetabling you cannot be timetabling they cannot be timetabling
Perfect
I cannot have timetabled you cannot have timetabled he cannot have timetabled we cannot have timetabled you cannot have timetabled they cannot have timetabled
V-ing perfect
I cannot have been timetabling you cannot have been timetabling he cannot have been timetabling we cannot have been timetabling you cannot have been timetabling they cannot have been timetabling
Interrogative form
Simple form
can I timetable? can you timetable? can he timetable? can we timetable? can you timetable? can they timetable?
V-ing form
can I be timetabling? can you be timetabling? can he be timetabling? can we be timetabling? can you be timetabling? can they be timetabling?
Perfect
can I have timetabled? can you have timetabled? can he have timetabled? can we have timetabled? can you have timetabled? can they have timetabled?
V-ing perfect
can I have been timetabling? can you have been timetabling? can he have been timetabling? can we have been timetabling? can you have been timetabling? can they have been timetabling?
Interro-negative form
Simple form
can I not timetable? can you not timetable? can he not timetable? can we not timetable? can you not timetable? can they not timetable?
V-ing form
can I not be timetabling? can you not be timetabling? can he not be timetabling? can we not be timetabling? can you not be timetabling? can they not be timetabling?
Perfect
can I not have timetabled? can you not have timetabled? can he not have timetabled? can we not have timetabled? can you not have timetabled? can they not have timetabled?
V-ing perfect
can I not have been timetabling? can you not have been timetabling? can he not have been timetabling? can we not have been timetabling? can you not have been timetabling? can they not have been timetabling?